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Posted to hdfs-issues@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2025/09/15 11:24:00 UTC
[jira] [Moved] (HDFS-17834) HDFS NameNode Web UI generates invalid HTTP links for DataNodes in IPv6 environment
[ https://issues.apache.org/jira/browse/HDFS-17834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran moved HADOOP-19683 to HDFS-17834:
------------------------------------------------
Component/s: (was: website)
Key: HDFS-17834 (was: HADOOP-19683)
Target Version/s: 3.5.0 (was: 3.4.1)
Affects Version/s: 3.4.1
(was: 3.4.1)
Project: Hadoop HDFS (was: Hadoop Common)
> HDFS NameNode Web UI generates invalid HTTP links for DataNodes in IPv6 environment
> -----------------------------------------------------------------------------------
>
> Key: HDFS-17834
> URL: https://issues.apache.org/jira/browse/HDFS-17834
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.4.1
> Environment: !image-2025-09-10-10-12-28-486.png|width=545,height=298!
> Reporter: sunhui
> Priority: Minor
> Attachments: fixwebsite_support_ipv6.diff, image-2025-09-10-10-12-28-486.png
>
>
> In the HDFS NameNode Web UI (http://nn-host:9870/dfshealth.html#tab-datanode), the "Http Address" column for DataNodes generates completely corrupt and invalid links when the DataNode's address is an IPv6 literal.
> 1. It fails to encapsulate the IPv6 address in square brackets `[]`, which is required by RFC 2732. 2. More critically, it appears to **parse the IPv6 address incorrectly**, mistaking a part of the address (e.g., the `30` in `1172:30:...`) for the port number, which completely breaks the URL. This results in a malformed, unclickable link that does not point to the DataNode's web interface. **Current Behavior & Evidence:** The DataNode's actual address is: `[1172:30:0:0:0:0:8a34]:50010` However, the NameNode UI displays the link as: `https://datanodeHostname:30` This link is **invalid** and leads nowhere. The UI has: - Stripped the original port `50010`. - Incorrectly extracted `30` (which is part of the IPv6 address) and used it as the port. - Failed to wrap the IPv6 address, leading to incorrect parsing.
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